mineral

Amazonite

Potassium Feldspar (KAlSi3O8), specifically Microcline

Hardness: 6.0-6.5 Mohs scale; Color: Sage green to deep turquoise blue-green; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 2.56-2.58

Hardness: 6
Color: Sage green to deep turquoise blue-green
Luster: Vitreous to pearly

Identified March 21, 2026More mineral →

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Physical properties

Formation & geological history

Formed in igneous environments, specifically pegmatites and granites, through the cooling of mineral-rich fluids. The blue-green color is attributed to the presence of lead and water within the feldspar structure. The geological age varies greatly depending on the host pluton, ranging from billions to millions of years old.

Uses & applications

Commonly used as a gemstone for jewelry (cabochons and beads) and as an ornamental stone for carvings. It is also a very popular specimen for mineral collectors due to its distinct color.

Geological facts

Also known as 'Amazon Stone,' it was named after the Amazon River, although no deposits have actually been found there. High-quality specimens often feature white streaks of albite, creating a marble-like appearance.

Field identification & locations

Identify in the field by its distinct green to blue-green color and 'perthitic texture' (mottled white streaks). Commonly found in granitic pegmatites in Colorado (Pikes Peak), Brazil, Russia (Ural Mountains), and Madagascar. Look for blocky shapes with shiny cleavage planes.

Other mineral specimens

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Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral

Epidote

Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

mineral